How severe is CVE-2025-34290?

CVE-2025-34290 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-34290 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34290?

CVE-2025-34290 affects Versa-networks Sase Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34290?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-34290 have an EU (EUVD) identifier?

Yes. CVE-2025-34290 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204643.

When was CVE-2025-34290 published?

CVE-2025-34290 was published on 2025-12-20 and last updated on 2026-08-25.

CVE-2025-34290

CVE-2025-34290 is a high-severity vulnerability in Versa-networks Sase Client with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-250.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204643
Weakness: CWE-250
Affected product: Versa-networks Sase Client
Published: 2025-12-20
Last modified: 2026-08-25

Description

Versa SASE Client for Windows versions released between 7.8.7 and 7.9.4 contain a local privilege escalation vulnerability in the audit log export functionality. The client communicates user-controlled file paths to a privileged service, which performs file system operations without impersonating the requesting user. Due to improper privilege handling and a time-of-check time-of-use race condition combined with symbolic link and mount point manipulation, a local authenticated attacker can coerce the service into deleting arbitrary directories with SYSTEM privileges. This can be exploited to delete protected system folders such as C:\\Config.msi and subsequently achieve execution as NT AUTHORITY\\SYSTEM via MSI rollback techniques.

Frequently asked questions

What is CVE-2025-34290?: Versa SASE Client for Windows versions released between 7.8.7 and 7.9.4 contain a local privilege escalation vulnerability in the audit log export functionality. The client communicates user-controlled file paths to a privileged service, which performs file system operations without impersonating the requesting user. Due to improper privilege handling and a time-of-check time-of-use race condition combined with symbolic link and mount point manipulation, a local authenticated attacker can coerce the service into deleting arbitrary directories with SYSTEM privileges. This can be exploited to delete protected system folders such as C:\\Config.msi and subsequently achieve execution as NT AUTHORITY\\SYSTEM via MSI rollback techniques.
How severe is CVE-2025-34290?: CVE-2025-34290 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-34290 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34290?: CVE-2025-34290 affects Versa-networks Sase Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34290?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-34290 have an EU (EUVD) identifier?: Yes. CVE-2025-34290 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204643.
When was CVE-2025-34290 published?: CVE-2025-34290 was published on 2025-12-20 and last updated on 2026-08-25.

References

Affected products (1)

cpe:2.3:a:versa-networks:sase_client:*:*:*:*:*:windows:*:*

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